Proceedings World Geothermal Congress 2005 Antalya, Turkey, 24-29 April 2005 State of the Art of the Geothermal Resources in Croatia in the Year 2004 Krešimir Jelić 1, Miron Kovačić 2, Sonja Koščak-Kolin 1 1 Faculty of Mining Geology and Petroleum Engineering, University of Zagreb, 10000 Zagreb, Pierottijeva 6, Croatia 1 Institute of geology, Sachsova 2, 10000 Zagreb, Croatia E- mail:
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[email protected] Keywords: geothermal resources, thermal power, direct prevail. The northeast area of the boundary belongs to the energy utilization, geology survey, Croatia Pannonian Basin. In this area the Quaternary and Tertiary sedimentary rocks dominate which overly the crystalline ABSTRACT bedrock and occasional Mesozoic sedimentary rocks. In general, there are two different regions in the Republic of Locality of the stratigraphic unit and description of the Croatia both in geological and geothermal respect. The rocks are represented on the geological map (Fig. 1). The Dinaric area occupies the southeastern part of the country main characteristics of the tectonic pattern are tangential with predominantly Mesozoic carbonate rocks structures (folds, thrusts, nappes) of the northwest-southeast characterized by the temperature gradients ranging from strike, mostly originated in Paleogene, disturbed by 0.01 to 0.03°C/m. The northeast part of the country lies younger normal faults from Neogene to Quaternary (Velić, mostly in the area known as the Panon. It is dominated by I. & Velić, J., 1993). clastic sedimentary rocks of Quaternary and Tertiary age that overly the crystalline bedrock and, occasionally, the These two geologically different regions have different Mesozoic sedimentary rocks.